KI (Potassium iodide) Molar Mass (With Calculations)

Molar mass of KI (Potassium iodide) is 165.998 g/mol.

Well, now you have come to know the molar mass of KI.

But how can you get this value?

Let me show you the calculation to get the molar mass of KI (Potassium iodide).

If you are a visual learner like me, then here is a short one minute video for you.

KI (Potassium iodide) Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of KI (Potassium iodide).

Because the molar mass of any molecule (or compound) can be calculated by simply adding the molar masses of individual atoms.

Now here we have to find the molar mass of KI (Potassium iodide).

So for that, have a look at the periodic table given below.

You can see the molar mass value of all the atoms from this periodic table.

Now in KI, there is 1 Potassium atom and 1 Iodine atom.

So let’s look at the molar mass of Potassium and Iodine from the above periodic table.

You can see that;

The molar mass of Potassium is 39.098 g/mol. ^[1]

The molar mass of Iodine is 126.90 g/mol. ^[2]

Now, to calculate the molar mass of KI, you just have to add the molar mass of all the individual atoms that are present in KI.

You can see that in KI, there is 1 Potassium atom and 1 Iodine atom.

So, Molar mass of KI = Molar mass of 1 Potassium (K) atom + Molar mass of 1 Iodine (I) atom.
= 39.098 + 126.90
= 165.998 g/mol

Hence the Molar mass of KI is 165.998 g/mol.

I hope you have understood the short and simple calculation for finding the molar mass of KI.

Remember

• In some books, you may see the unit of molar mass as grams/mole or g/mole. But all these units (i.e g/mol, grams/mole and g/mole) are the same. 
• Always follow the calculation order to avoid any mistakes in calculation. First solve the brackets, then multiplications and at last do the final addition.
• And don’t forget to put the unit g/mol to your final calculated molar mass.

Check out other related topics for more practice;
NH4Cl (Ammonium chloride) Molar Mass
MgSO4 (Magnesium sulfate) Molar Mass
Benzene (C6H6) Molar Mass
KMnO4 (Potassium permanganate) Molar Mass
FeCl3 Molar Mass